cant tell a differance gsr /type-r

want to know how to read the #s off the head and need a web site to figure it out if nobody knows,i have a jdm gsr,i think, it says p72-1 on the head.but it has dual valves in it,nobody i know of did any installing of aftermarket parts in the head.I got it from japan.i am still new at this but this has cofused everyone i know. got any pointers, they will help. thanks
[email protected]:2cents:

You were already given an answer in your other thread as well as a PM I sent you. You have a SiR-G (jdm gs-r) head. Please don't make more than one thread asking the same question.